Magnesium Fluoride Whispering Gallery Mode Disk-Resonators for Microwave Photonics Applications

We have manufactured a high-Q whispering gallery mode resonator with magnesium fluoride for microwave photonics applications in the gigahertz frequency range. This crystal is scarcely used for resonator fabrication despite its numerous advantages, that are mainly high mechanical hardness, low sensit...

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Veröffentlicht in:	IEEE photonics technology letters 2010-11, Vol.22 (22), p.1629-1631
Hauptverfasser:	Tavernier, H, Salzenstein, P, Volyanskiy, K, Chembo, Y K, Larger, L
Format:	Artikel
Sprache:	eng
Schlagworte:	Cavity resonators Conferences Engineering Sciences Fiber optics Magnesium fluoride Magnesium fluorides Materials Microwave photonics Nonlinear optics optical cavity Optical fibers Optical resonators Optics Photonic Photonics Physics Q factor Resonant frequency Resonators Water vapor whispering gallery mode (WGM) resonator Whispering gallery modes
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Beschreibung
Zusammenfassung:	We have manufactured a high-Q whispering gallery mode resonator with magnesium fluoride for microwave photonics applications in the gigahertz frequency range. This crystal is scarcely used for resonator fabrication despite its numerous advantages, that are mainly high mechanical hardness, low sensitivity to water vapor pollution, and low sensitivity to photo- and thermo-refractive fluctuations at optimal temperatures. Using a customized machining procedure, we have successfully fabricated and characterized a 5-mm resonator with a surface rugosity of the order of 1 nm (from 3 to 12 atoms). Cavity ring-down measurements enabled us to determine that the resonator has a quality factor Q = 3.4 × 10 8 at 1550 nm.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2010.2075923